Harrow.



E. A. UONKLIN.

HARROW.

APPLIGATION FILED MAR. 29, 1909.

Patented Dec. 28, 1909.

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Witmwou ETHAN A. OONKLIN, OF SHELBY, MICHIGAN, ASSIGNOR OF ONE-HALF TOWESLEY GRAHAM, OF HARRISON VALLEY, PENNSYLVANIA, AND AMOS M. CONKLIN, OF

GRANT, MICHIGAN.

Specification of Letters Patent.

HARE/0W Patented Dec. 28, 1909.

T 0 all whom it may concern:

Be it known that I, ETHAN A. CONKLIN, a citizen of the United States,residing at Shelby, in the county of Oceana and State of Michigan, haveinvented certain new and useful. Improvements in Harrows, of which thefollowing is a specification.

My invention relates to improvements in disk harrows, and its objectsare: First, to provide a harrow of the class mentioned, with which thedisks may be readily adjusted to make the land harrowed wider ornarrower, as may be necessary to accommodate the harrow to the distancebetween trees when harrowing is being done in orchards, or on stumpyground, &c., and, second, to provide a means whereby the disks may bereadily set to any desired angle with the supporting frame.

I attain these objects by the mechanism illustrated in the accompanyingdrawing, in which- Figure 1 is a front elevation of the harrow with thetongue shown in cross section. Fig. 2 is a top plan of the same. Fig. 3is an end elevation of the same. Fig. 4 shows the face formationclamping disks that hold the auxiliary harrow frames in place, and Fig.5 is a sectional elevation on the line a? of Fig. 3.

Similar letters refer to similar parts throughout the several views.

In the accompanying drawing A represents the harrow frame proper, whichis provided with a seat G, and is so constructed as to form ways inwhich the slides B B may be supported and readily moved longitudi nallyof the frame A, either to extend or to contract the machine. The slidesB B are provided with gear teeth h it, so located that they will meshfreely with the gear teeth on the wheel H that when the gear wheel ismade to revolve in one direction the slides B B will be forced apart andthe width of ground covered by the disks will be increased, and when thewheel is made to re volve in the other direction the slides will bedrawn together and the width of ground covered will be diminishedaccordingly. The wheel H is manipulated by means of the hand wheel H,mounted on the shaft H which is easily accessible to the operator whenseated on the seat G, and, when desired, the operator may keep theslides under perfect control, to be extended or withdrawn at pleasure,so that when harrowing in orchards where the distance between treesvaries, or among stumps, the harrow may be instantly adjusted toaccommodate it to the varied distances and conditions.

For the purpose of securing the auxiliary disk frames D D to the slidesB B, in such a manner that they may be given different angles to theframe A, I secure supporting blocks I) b firmly to the lower surface ofthe slides and to these I secure one disk of a clutch C. The other diskof this clutch is firmly secured to the upper surface of the auxiliaryframes D D, and the two are brought together so that the projections Cwill enter the depressions 0 of the opposite disk, and the whole issecured together by means of any suitable bolt, as C, so that theauxiliary frames D D will be firmly held to position whether parallelwith the frame A or at any desired angle therewith. The clutches O C maybe made with as many or as few depressions, c, and elevations, c, asdesired so that the disk shaft and frame may be set at any desired anglewith the frame A, for the purpose of cutting the soil in as few or asmany particles as is desired, or, in other words, of pulverizing it tothe desired degree.

The disk shafts E E are supported in the hangers (Z (Z which, in turn,are secured to the auxiliary frames D D so that the disk shafts are madeto assume any position assumed by the said frames.

In Fig. 2 I have removed the upper portion of the frame A to show therelative position, and the action of the gear wheel H and the slides BB.

In Fig. 3 I have shown the disk made with live wings, a form that ismore desirable that the plain disks shown in Fig. 1 as they cut the soilmuch more perfectly, and leave the surface more perfectly pulverized andtillable.

The slides B B may be held to place by means of a pawl, as I, engaging aratchet wheel, as I, or by any other available form of securing device,if desired.

That I claim as new, and desire to secure by Letters Patent of theUnited States, is:

The combination in a harrow, of a main frame having longitudinalparallel grooves that open toward each other, slides fitted to slide inopposite directions in said grooves, gear teeth on said slides, a gearWheel and an actuating Wheel for actuating shaft mounted on eachauxiliary frame, and said slides, one half of a clutch secured to harrowdisks mounted on said shafts. ie the under surface of each of saidslides, I Signed at Shelby 'Michigan March 15 auxiliary frames, one halfof a clutch se- 1909. 7'

cured to the upper surface of each auxiliary I ETHAN A. OONKLIN. framein position to engage the half clutch I In presence of on the slides, tohold the auxiliary frames to C. L. CHURCHILL,

the desired angles, With the main frame, a SAMUEL BUOHER.

